Feldy teaches people to grip the rim with the ring and middle fingers at least in the modified power grip. And through the flight plate at least with the base of the thumb and the index finger and i am not sure but possibly both directions between the thumb and the index finger. Just in which variation and strength for each finger he uses i don't know because he didn't go into that with so much detail. He used the terms north south and east west direction when he was describing gripping both the rim and through the vertical parts of the disc. I don't recall if he said anything about gripping north-south through the wing or the flight plate or both. Nor do i know of his ideas for each finger.

Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.

He didn't go into where thre is pressure and into which direction and at which part of the throw. I think many top players grip tight early on. They have enough distance to not worry about too little arm speed. Or rather inefficient use of the arm muscles.

In his clinic here he mentioned the 80/20 rule for putts and drives and how they are opposite. That still does not address what individual fingers do tightness and direction wise.

Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.